传统的选煤厂设计是依据工业试验数据进行的。本文主要目的在于说明用比较简单的计算可靠地预测重力分选过程的基本选矿原理。这些方法除了预测选煤作业的性能之外,还具有估计设计工作灵活性(flexibilityof the design work)的优点。这些计算方法(见附录所示的计算实例)也能用于分析选煤厂操作特性,特别是用于 Traditional coal preparation plant design is based on industrial test data. The main purpose of this paper is to illustrate the basic principles of ore dressing that can reliably predict the gravity separation process with relatively simple calculations. In addition to predicting the performance of coal preparation operations, these methods have the advantage of estimating flexibility of the design work. These calculations (see calculation examples in appendix) can also be used to analyze the operating characteristics of a coal preparation plant, especially for